Galaxy S3 I9300 in China received a new Jelly Bean software update today, ZNDLK4 Android 4.1.1. Samsung KIES software update should have this firmware by now, if not, you can always install the firmware manually using the tutorial given below. You can easily update Galaxy S3 I9300 to ZNDLK4 Android 4.1.1 official Jelly Bean firmware using our tutorial below manually. I9300ZNDLK4 is an unbranded firmware for unlocked Galaxy S3 I9300. You can also root Galaxy S3 on this firmware.

As you continue reading below, we will guide you how to backup your important data, some other important tips and then tell you how to install ZNDLK4 Android 4.1.1 Jelly Bean on Galaxy S3 I9300 using ODIN. Don’t forget to backup all your apps and personal data because we don’t want anyone losing their data during the installation process. This is an official firmware update by Samsung, not a custom ROM. Let’s continue with the tutorial now.

Disclaimer: All the custom ROMs and firmwares, official software updates, tools, mods or anything mentioned in the tutorial belong to their respective owners/developers. We (TeamAndroid.com) or the developers are not to be held responsible if you damage or brick your device. We don’t have you on gun point to try out this tutorial 😉

Samsung Galaxy S3 USB Drivers

You will need to connect your Android phone with the computer. For that, please make sure you have installed the USB drivers for Samsung Galaxy S3 properly. If not, you can download the latest official drivers from our Android USB Drivers section here:

Backup and Other Important Tips

Done with the USB drivers? Perfect. The tutorial is on the next page, but first, please take a look at the following tips and important points you need to take care of. These are important, as we don’t want anyone losing their personal data or apps:

Always backup your important data that you might need after you install a new custom ROM, an official software update or anything else. Make a backup for just in case, you never know when anything might go wrong. See below for some tips on how to backup data:

Samsung users can also back up data using Samsung KIES. If you backup data manually, you get more options what to choose from and it is very easy to move data across Android devices from different manufacturers, i.e moving Samsung Galaxy Note backup data to HTC One X.

If you already have a custom recovery (ClockworkMod, TWRP etc.) installed on your phone, we strongly recommend a backup using that as it creates a complete image of your existing phone set up.

A few more optional tips that you should remember:

1. Having problems connecting your Android phone to the computer? You need to enable USB debugging mode. See here: How to Enable USB Debugging — for Gingerbread, Ice Cream Sandwich and Jelly Bean.

2. Make sure your Android device is charged up to 80-85% battery level. This might help you: How to Check Battery Percentage. Why? Because, if your phone goes off suddenly while installing a custom ROM, flashing an official firmware update or installing mods etc. — your phone might get bricked or go dead permanently. No one wants that, right?

4. Most of the tutorials and how-to guides on Team Android are for factory unlocked Android phones and tablets. We recommend NOT to try our guides if your phone is locked to a carrier, unless we have specified the carrier name or device model.

If you find the above tips useful and they were helpful to you, please consider giving us a +1 or LIKE to thank us!

UPDATE: The latest XXDLK1 Android 4.1.1 for United Kingdom and users from other countries is now available! Read the full tutorial here!

All set and ready? Good. You can now head over to the next page and update Galaxy S3 I9300 to Android 4.1.1 ZNDLK4 official firmware update.